Apparatus for forming paper cups.



L, W. FARMER.

APPARATUS FOR FORMING PAPER CUPS.

APPLIQATIQN FILED AUG. 23, 1912,

Patented Aug". 18, 1914a LUKE W. FAB-MER, OF SOMERVILLE, MASSACHUSETTS.

APPARATUS FOR FOR-MING- PAPER CUPS.

memes.

Specification of Letters Patent.

Patented Aug. 18, 19141.

Application filed August 23, 1912. Serial No. 716,584.

1 To all whom it may aoncorn Be it known that I, LUKE V. FARMER, citizen. of the United States, residing at Somerville, in the county of Middlesex and State of Massachusetts, have invented an Improvement in Apparatus for Forming Paper Cups, of which the following is a specification.

In the manufacture of one oi the numerous types of paper cups now on the market, a double bottom is employed, and the lower edge of the cup-body is turned over upon the first bottom-piece, and then the second bottom-piece is applied.

This invention has for its object to construct an apparatus adapted to turn the lower edge of the cup-body overonto the first bottom-piece, and involves the employment of a Gauging-to l designed to be manipulated by hand. The first bottompiece and cup-body are' placed on a rotatable form and said form is a turret or other rotatable carrier, whereby it may be moved into cooperative relation with the Hanging-tool, and means are pro 'vided for rotating said form while in such position, in order that the flanging-tool while held in a certain position may act to turn inward the lower edge of the cup-body.

Figure 1 is a side elevation of a portion of a cup-Forming amniratus embodying this invention. Fig. 2 is a. horizontal section of the same taken on the dotted line 2-2, Fig.

- 1. Fig. 3 is a vertical sectional detail taken on the dotted line 3-3 Fig. 2. Fig. l' is a detail of the Hanging-tool, illustrating the operation of the same when turning over the lower end 01 the cupbody. Fig. 5 is a vertical section of a completely tt'ormed cup.

represents one of a plurality oi conical forms on which the cups are formed. It is secured to a, spindle 12 having its hearings in the extremity of an arm 13, extended radially from a hub l l. Said hub is mount ed on a pivot-stud about which it is free to be rotated by hand, and from it several arms extend radially, each supporting a form 10. The spindle 12 has secured to it a spur-gear 20, which, when engaged by a driven-gear rotates the form. A single driving-means is provided into and out of engagement with which the several spurgears aremovable, thereby to rotate the forms separately. The driving-means is movable into and out of the path oi movement of said spur-gear.

A5 a driving means here shown, a pinion ranged on a is mounted on a pivot-stud 26, secured to a short arm 27, extended radially from an upright rod 28, said rod having its bearings in a tubular support 29. Said pinion 25 'has connected with it another pinion 30, which engages a pinion 31, secured to an upright rotating-shaft 32 arranged in alinement with the rod 28. Said pinions 25 and are movable planetarily about the pinion 31, by a rotary movement of the rod 28, thereby to move the pinion 25, into and out of the path of the spur-gear 20, while the pinion 30 re.

mains in continuous engagement with the pinion 3].. As a means to oscillate the rod 28, for the purpose of moving the pinion.

25, planetarily about the pinion 31, a handpiece 40 is secured to the upper end of the rod 28 which is conveniently arranged to be engaged by one hand of the operator. By the means thus described the forms Will i be rotated separately.

The essential feature of my invention,

however, resides in a Hanging-tool, here shown as a blade 50, secured'to the handpiece 40, or it may be otherwise connected to the rod 28, so as to be moved by the hand-piece in a direction toward the form in a horizontal plane or thereabout, and at the same time the rod is turned to enge the gearing.

In operation the bottom-piece 60, is placed on the form; then a cup-body is placed on the form with its small end portion projecting a short distance above the top of the form; then the hand-piece 40 is moved to cause engagement of the gearing, and the form thereby caused to rotate, and the flanging-tool is moved to engage the projecting portion of thecupbody and turn said projecting portion inward upon the bottompieee, as represented in Fig. 4; then the other bottom-piece is applied. Suitable means are usually employed to apply a moderate pressure to the bottom-piece, and, as here shown, a pivoted plate 70, is arranged to be swung downward into engagement with the bottom pieee to clamp the parts firmly and hold them for a short period of time. Said clamping-plate 70, is moved downward by means of a hand lever 71, and

eating portion 7 2,

through and beyond the plane containing the pivots 76 and 77, said'clamp will remain in such position until the turret or carrier is rotated far enough to swing the end of the lever 78 into engagement with a cam 80, by which it is moved to exert a moderate pressure upon the hand-lever 7'1, suflicient to cause the pivotal connection '75 to pass to the other side of said plane containing the pivots 7G and 77, whereupon the spring 85 acts to lift the clamping-plate.

In an apparatus for forming paper cups, the combination with a rotatable form on which a bottom-piece and cup-body are placed, a carrier for said form, a gear 0peratively actuating said form, a pinion, a movable support for said pinion afiording movement thereof into and out of engagement' with said gear, another pinion connected with the aforesaid pinion, a driving gear for said last named pinion about which said pinion is movable planetarily, an oscillatory rod bearing said movable support, and a Hanging tool attached to said rod and movable to engage the bottom of the cup-body when said rod is turned, whereby to turn the bottom of the cup-body inward'as the form is rotated.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

' LUKE W. FARMER.

\Vitnesses lino. R. BLINN, Lucy M, LiND UIST. 

